2 * Copyright (C) 2008 The Android Open Source Project
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
20 #include <sys/socket.h>
21 #include <sys/select.h>
23 #include <sys/types.h>
26 #include <linux/netlink.h>
27 #include <linux/rtnetlink.h>
29 #define LOG_TAG "Netd"
31 #include <cutils/log.h>
33 #include "NetlinkManager.h"
34 #include "NetlinkHandler.h"
36 const int NetlinkManager::NFLOG_QUOTA_GROUP = 1;
38 NetlinkManager *NetlinkManager::sInstance = NULL;
40 NetlinkManager *NetlinkManager::Instance() {
42 sInstance = new NetlinkManager();
46 NetlinkManager::NetlinkManager() {
50 NetlinkManager::~NetlinkManager() {
53 NetlinkHandler *NetlinkManager::setupSocket(int *sock, int netlinkFamily,
54 int groups, int format) {
56 struct sockaddr_nl nladdr;
60 memset(&nladdr, 0, sizeof(nladdr));
61 nladdr.nl_family = AF_NETLINK;
62 nladdr.nl_pid = getpid();
63 nladdr.nl_groups = groups;
65 if ((*sock = socket(PF_NETLINK, SOCK_DGRAM, netlinkFamily)) < 0) {
66 ALOGE("Unable to create netlink socket: %s", strerror(errno));
70 if (setsockopt(*sock, SOL_SOCKET, SO_RCVBUFFORCE, &sz, sizeof(sz)) < 0) {
71 ALOGE("Unable to set uevent socket SO_RCVBUFFORCE option: %s", strerror(errno));
76 if (setsockopt(*sock, SOL_SOCKET, SO_PASSCRED, &on, sizeof(on)) < 0) {
77 SLOGE("Unable to set uevent socket SO_PASSCRED option: %s", strerror(errno));
82 if (bind(*sock, (struct sockaddr *) &nladdr, sizeof(nladdr)) < 0) {
83 ALOGE("Unable to bind netlink socket: %s", strerror(errno));
88 NetlinkHandler *handler = new NetlinkHandler(this, *sock, format);
89 if (handler->start()) {
90 ALOGE("Unable to start NetlinkHandler: %s", strerror(errno));
98 int NetlinkManager::start() {
99 if ((mUeventHandler = setupSocket(&mUeventSock, NETLINK_KOBJECT_UEVENT,
100 0xffffffff, NetlinkListener::NETLINK_FORMAT_ASCII)) == NULL) {
104 if ((mRouteHandler = setupSocket(&mRouteSock, NETLINK_ROUTE,
108 (1 << (RTNLGRP_ND_USEROPT - 1)),
109 NetlinkListener::NETLINK_FORMAT_BINARY)) == NULL) {
113 if ((mQuotaHandler = setupSocket(&mQuotaSock, NETLINK_NFLOG,
114 NFLOG_QUOTA_GROUP, NetlinkListener::NETLINK_FORMAT_BINARY)) == NULL) {
115 ALOGE("Unable to open quota2 logging socket");
116 // TODO: return -1 once the emulator gets a new kernel.
122 int NetlinkManager::stop() {
125 if (mUeventHandler->stop()) {
126 ALOGE("Unable to stop uevent NetlinkHandler: %s", strerror(errno));
130 delete mUeventHandler;
131 mUeventHandler = NULL;
136 if (mRouteHandler->stop()) {
137 ALOGE("Unable to stop route NetlinkHandler: %s", strerror(errno));
141 delete mRouteHandler;
142 mRouteHandler = NULL;
148 if (mQuotaHandler->stop()) {
149 ALOGE("Unable to stop quota NetlinkHandler: %s", strerror(errno));
153 delete mQuotaHandler;
154 mQuotaHandler = NULL;